Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Separate detectors for simple and complex grating patterns?

A M Derrington, D R Badcock

    Vision Research
    |January 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Two-dimensional pattern motion analysis uses local features.

    Vision research·2012
    Same author

    Foveal contrast processing of increment and decrement targets is equivalently reduced in glaucoma.

    The British journal of ophthalmology·2008
    Same author

    Motion perception in migraineurs: abnormalities are not related to attention.

    Cephalalgia : an international journal of headache·2006
    Same author

    Do migraineurs have difficulty judging direction of simulated heading?

    Cephalalgia : an international journal of headache·2006
    Same author

    Motion processing deficits in migraine.

    Cephalalgia : an international journal of headache·2004
    Same author

    An analysis of the factors associated with visual field deficits measured with flickering stimuli in-between migraine.

    Cephalalgia : an international journal of headache·2004

    Beat patterns, created by combining two gratings, are detected differently than simple gratings. These visual stimuli do not engage the same neural mechanisms, indicating unique processing in the visual system.

    Area of Science:

    • Visual perception
    • Neuroscience
    • Image processing

    Background:

    • Visual stimuli composed of multiple spatial frequencies can create "beat" patterns.
    • These beat patterns exhibit periodic contrast variations, with the beat frequency equaling the difference between component frequencies.

    Purpose of the Study:

    • To investigate the detection and discrimination mechanisms of visual beat patterns.
    • To compare the processing of beat patterns with that of simple gratings.

    Main Methods:

    • Detection and discrimination thresholds were measured for beat patterns (1 c/deg, components 9 & 10 c/deg) and simple gratings (1 & 10 c/deg).
    • The influence of temporal modulation (6 Hz) and contrast on perception was assessed.
    • Movement aftereffects were examined using low and high spatial frequency gratings and beat patterns.

    Related Experiment Videos

    Main Results:

    • Temporal modulation at 6 Hz reduced detection thresholds for 1 c/deg gratings, but not for beat patterns or 10 c/deg gratings.
    • Discrimination of movement direction varied with contrast differently for beat patterns compared to low and high spatial frequency gratings.
    • Beat patterns were largely unaffected by movement aftereffects, unlike simple gratings.

    Conclusions:

    • Beat patterns are not detected by the same visual mechanisms responsible for processing simple gratings.
    • The unique perceptual characteristics of beat patterns suggest specialized neural pathways or processing stages.